> I am running PostgreSQL 9.4.4 on Fedora 22. > > SELECT floor(4.725 * 100 + 0.5) returns 473, which is what I expected. > > SELECT floor(4.725 * power(10, 2) + 0.5) returns 472, which I find surprising. > > Please can someone explain the anomaly.
Thanks for all the responses. Plenty of workarounds. I can carry on now :-) Frank